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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5270 | serge | 1 | #ifndef _ASM_X86_PAGE_DEFS_H |
| 2 | #define _ASM_X86_PAGE_DEFS_H |
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| 3 | |||
| 4 | #include |
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| 5 | #include |
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| 6 | |||
| 7 | /* PAGE_SHIFT determines the page size */ |
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| 8 | #define PAGE_SHIFT 12 |
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| 9 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) |
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| 10 | #define PAGE_MASK (~(PAGE_SIZE-1)) |
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| 11 | |||
| 12 | #define __PHYSICAL_MASK ((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1)) |
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| 13 | #define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) |
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| 14 | |||
| 15 | /* Cast PAGE_MASK to a signed type so that it is sign-extended if |
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| 16 | virtual addresses are 32-bits but physical addresses are larger |
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| 17 | (ie, 32-bit PAE). */ |
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| 18 | #define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) |
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| 19 | |||
| 20 | #define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) |
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| 21 | #define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) |
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| 22 | |||
| 23 | #define HPAGE_SHIFT PMD_SHIFT |
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| 24 | #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) |
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| 25 | #define HPAGE_MASK (~(HPAGE_SIZE - 1)) |
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| 26 | #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) |
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| 27 | |||
| 28 | #define HUGE_MAX_HSTATE 2 |
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| 29 | |||
| 30 | #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) |
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| 31 | |||
| 32 | #define VM_DATA_DEFAULT_FLAGS \ |
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| 33 | (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ |
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| 34 | VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) |
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| 35 | |||
| 36 | #define __PHYSICAL_START ALIGN(CONFIG_PHYSICAL_START, \ |
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| 37 | CONFIG_PHYSICAL_ALIGN) |
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| 38 | |||
| 39 | #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) |
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| 40 | |||
| 41 | #ifdef CONFIG_X86_64 |
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| 42 | #include |
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| 43 | #else |
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| 44 | #include |
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| 45 | #endif /* CONFIG_X86_64 */ |
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| 46 | |||
| 47 | #ifndef __ASSEMBLY__ |
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| 48 | |||
| 49 | extern int devmem_is_allowed(unsigned long pagenr); |
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| 50 | |||
| 51 | extern unsigned long max_low_pfn_mapped; |
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| 52 | extern unsigned long max_pfn_mapped; |
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| 53 | |||
| 54 | static inline phys_addr_t get_max_mapped(void) |
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| 55 | { |
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| 56 | return (phys_addr_t)max_pfn_mapped << PAGE_SHIFT; |
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| 57 | } |
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| 58 | |||
| 59 | bool pfn_range_is_mapped(unsigned long start_pfn, unsigned long end_pfn); |
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| 60 | |||
| 61 | extern unsigned long init_memory_mapping(unsigned long start, |
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| 62 | unsigned long end); |
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| 63 | |||
| 64 | extern void initmem_init(void); |
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| 65 | |||
| 66 | #endif /* !__ASSEMBLY__ */ |
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| 67 | |||
| 68 | #endif /* _ASM_X86_PAGE_DEFS_H */ |